MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


AsyncRAT


Vendor detections: 12


Intelligence 12 IOCs 1 YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012
SHA3-384 hash: c5ce83a01464b486dfaf5c55a06806145d7403522b449cfe072a4d6a5ab7992dbfdc6b3ce6226820ac7997676b56ec3c
SHA1 hash: 0a4921a5c4276df2bb8864701f09f014bd3eba6c
MD5 hash: 27a502888efe2f0b62c90bc1665903dc
humanhash: kansas-red-august-connecticut
File name:27a502888efe2f0b62c90bc1665903dc.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:426'496 bytes
First seen:2022-03-27 07:56:04 UTC
Last seen:2024-07-24 23:17:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:/yidzHD4oZ0MiDoK+ur+pvzHjMUoBbYdYG4PJvIclRag/0cXurpCRx7W35KLbdPB:/pc+ooRlYnJAlg/HteKLb9d
Threatray 8'676 similar samples on MalwareBazaar
TLSH T1619495BC7E112B6AEE1D803748D189A6BBF30E3F5240698A378B34C6C75F0551DF6A94
File icon (PE):PE icon
dhash icon b2ae8e8e9e86868e (1 x AsyncRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
185.140.53.137:1604

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
185.140.53.137:1604 https://threatfox.abuse.ch/ioc/455710/

Intelligence

File Origin
# of uploads :
3
# of downloads :
295
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/258140/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.27414.28109.27865.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Creating a file in the %temp% directory
Creating a process from a recently created file
Running batch commands
Creating a file
Launching a process
Unauthorized injection to a recently created process
Moving of the original file
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/624018d21f2042394837c63f/reports/2b634ab0-af03-4b67-a4cb-e5816193f771/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/678249f3-2c5b-4a48-a456-b5c45a88f260
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965255
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Moves itself to temp directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 597732 Sample: YcKnIqxyQM.exe Startdate: 27/03/2022 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 8 other signatures 2->41 7 YcKnIqxyQM.exe 5 2->7         started        process3 file4 29 C:\Users\user\AppData\...\DnsExit_Async.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\...\YcKnIqxyQM.exe.log, ASCII 7->31 dropped 43 Moves itself to temp directory 7->43 45 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->45 11 DnsExit_Async.exe 2 7->11         started        15 cmd.exe 2 7->15         started        17 cmd.exe 1 7->17         started        19 cmd.exe 1 7->19         started        signatures5 process6 dnsIp7 33 iphy2.linkpc.net 185.140.53.137, 1604, 49761 DAVID_CRAIGGG Sweden 11->33 47 Antivirus detection for dropped file 11->47 49 Multi AV Scanner detection for dropped file 11->49 51 Machine Learning detection for dropped file 11->51 53 Uses schtasks.exe or at.exe to add and modify task schedules 15->53 21 conhost.exe 15->21         started        23 conhost.exe 17->23         started        25 schtasks.exe 1 17->25         started        27 conhost.exe 19->27         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2022-03-24 03:37:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
30 of 42 (71.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7kzz6xrffohgoowdavbbmiafgxqipak2xhcjwv4vnl6wjfbm4aja._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
AsyncRAT
0c323c02db0a52d9a1764a74e3cb5a7bcc8e7b9839160179a772de3a6bc8cf26
AsyncRAT
2db9c7811679d1b6d646220a908423199a4ae1d876ddb60189e8bc1c9bba74e9
AsyncRAT
5468fe6c4a8a65ed2e4e3c101c8fd0191b9773acc51ae61da6d446057958511b
AsyncRAT
5cc0900c9ec86120d00632b859c3ff0d03bff355db901ba7a1d87672fa096707
AsyncRAT
8e3079b83ab70db97e2508e7a9a57a8a5ce124b1524c6a64867b5ff33edcbdca
AsyncRAT
959e3ca2579b6be8a11c06763c5a34ec118abc96d869e25bef06319c92da465e
AsyncRAT
b086a8ed459f06adf11cdadcba62c689c178975063659e6b5c153844d1f25ac3
AsyncRAT
+ 8'666 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat suricata
Link:
https://tria.ge/reports/220327-js9brsbdcr/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
iphy2.linkpc.net:1604
Unpacked files
SH256 hash:
27475805b782ad5b6b19e12119ee2680bb471882b5bad4f4440da62d9e1aa7b7
MD5 hash:
2266c7d6c03854c6c9d78c92ff4a687d
SHA1 hash:
50128d69e4b3e109eeba24deddd4ab478d08d6ba
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/d93a7885-c108-4260-99ff-ebea65fde637/
Parent samples :
9abeaa7c4550ac2529c0f2ff9490b71b5885f774605df156228d8fd6bbfc8aee
fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012
216bc9c39b921e28800aa308d3648b30d5ba82a46f6f5aa32e42943bed703b1f
95bca18b03f45d44a3b1962f05c170cb598c4d315a3a90de532deaed57e16920
SH256 hash:
fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012
MD5 hash:
27a502888efe2f0b62c90bc1665903dc
SHA1 hash:
0a4921a5c4276df2bb8864701f09f014bd3eba6c
Link:
https://www.unpac.me/results/d93a7885-c108-4260-99ff-ebea65fde637/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/fab39f5e252b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/fab39f5e252b8e673ac3054216200535e087815ab9c49b57956afd64942ce012

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:INDICATOR_EXE_Packed_Babel
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Babel
Rule name:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_Goliath
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Goliath
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/258140/

Comments